Nailing machine



Oct. 29, 1929.

3 Sheets-Sheet 1 /NVEN TOR flaw/ I lllli E. R. POPE MAILING MACHINE Original Filed March 2'7, 1924 1929- E. R. POPE "1,733,167

NAILING MACHINE Original Filed March 27, 1924 s Sheets-Sheet 2 /Nl/EN7'0R am a 1% W6 4.4%

Oct. 29, 1929. E. R. POPE 1,733,167

4 NAILING MACHINE Original Filed March 27, 1924 5 Sheets-Sheet 5 r r I M 32 h a L I Y 14 3a i- 6 0 55' J 76 v H 1 42 i i I 26 I I a \pl/ 28 H\\/. 3a Z2 F1 .4 i5 .98 f

Patented Oct. 29, 1929 UNITED STATES PATENT OFFICE ELMER R. POPE, OF HAMILTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY N AILING MACHINE Application filed March 27, 1924, Serial No. 702,419. Renewed March 5, 1929.

This invention relates to nailing machines and, for illustrative purposes, it is herein shown and described as embodied in a machine for nailing heels upon shoes, but it should be understood that various features of the invention are applicable to nailing machines for other purposes than heel attaching.

The object of the invention is to improve the nail loading and nail driving mechanism of machines of the class indicated above with a view to increasing the range, accuracy, and simplicity of operation of such machines.

In the accomplishment of this object the invention provides, among other things, improved self adjusting means, co-operating with the work into which nails are to be driven, to determine the points at which the nails shall enter the work and to insure that the nails shall enter the work accurately at said points. In the illustrated machine laterally or transversely movable nail and driver guiding tubes are provided which c0- operate with separate and independently supported locators which locators are positioned by thework and control and determine the positions of the tubes at the time when the nails are to be driven. The copending application of Joseph H. Pope, Serial No. 612,254, filed January 12, 1923, discloses a mechanism in which the nozzle ends of nail and driver guiding tubes themselves en age, and are positioned by, the work, and the present in vention may, in a certain sense, be regarded as an improvement upon and development of the invention disclosed in the said application.

In the Pope application, above referred to, a machine is disclosed in which the nails are driven downwardly, the tubes being suspended by their upper ends in such a manner that their lower, or nozzle, ends are free to move transversely, within limits. The upper ends of the tubes are not permitted to move substantially and, inasmuch as the nails are loaded into the tubes from above, there is no difficulty in delivering a load of nails accurately to the tubes by the nail transferrer which is commonly provided on heeling machines. However, in heeling machines of another well known type, in which the nails are driven upwardly, the use of nail and driver guiding tubes which are so constructed and arranged that their nozzle ends adjust themselves to the work introduces a problem in respect to the loading of the nails into the tubes. The relation between the nail containing holes in the loader block of the nail transferrer is fixed, while the relation between the nozzle ends of the guiding tubes is capable of wide variation. Inasmuch as, in the upward drive type of machine, the nails must be dropped into the nozzle ends of the said tubes, it is apparent that some provision must be made for co-operation between the tubes and the transferrer to the end that the nails shall be properly delivered from the transferrer to the tubes.

Accordingly, in one of its aspects the present invention provides laterally movable nail and driver guiding tubes in combination with a nail loading device constructed and arranged to co-operate with said tubes to locate them in predetermined nail receiving positions. Proper functioning of the mechanism is conveniently accomplished by providing yielding means tending to maintain each tube in a predetermined position, and in the illustrated machine, the nail transferring or loading device is provided with openings arranged to embrace and locate the nozzle ends of the tubes positively in said predetermined positions which are so selected that the tubes register accurately with the nail containing holes in the loader block.

Another feature of the invention consists in the provision of separate means for locating a series of nail and driver guides in predetermined nail driving and nail loading patterns which are different from each other. In the machine herein described the location of the guides in the nail driving pattern is effected automatically by the self adjusting locators above referred to and their location in the nail loading pattern is effected by the nail transferrer, which is usually manually operated.

In this connection, a further feature of the invention resides in the combination with a nail transferring member or loader block of means, as a movable gate, for governing the delivery of nails therefrom, and a handle movable upon the member and by which it may be moved between nail receiving and nail delivering positions, said handle, in its movement upon the member, controlling the delivery governing means. The nail trans ferring and controlling devices. thus constitute a unit which, as far as nail delivery is concerned, is independent of surrounding ele ments, Therefore, no change in the nail releasing arrangement is required for differences in the structure of the heeling appai ratus or in the work performed by it.

The invention is capable of a variety of specific embodiments, one of which will now be described in detail in connection with the accompanying drawings, in which Fig. 1 is a perspective view of the nail. transferrer and nail driving mechanism of a heel attaching machine embodying the invention;

Fig. 2 is a plan view of the same;

Fig. 3 is a front elevation, partly in SUE. tion on the line 33 of Fig. 2;

Figs. l and 5 are vertical sectional views showing the nail driving mechanism at different stages in its operation;

Fig. 6 is a section of the nail trans-terror on the line 33 of Fig. 2; and

Fig. 7 is a section of the nail transferrer on the line 77. of Fig. 2.

In the drawings, 10 indicates the nailing die holder; of a heeling machine and,12 indicates. the-reciprocating cross head which car ries and aetuates thenail drivers 14:. A die block 16 is mounted'in the holder 1O with1the usual tongue and groove connections18 and locking buttons 20.- Upright nail and driver, guiding tubes 22, corresponding in number to the-number of nails. to be driven, are mounted in a tube carrier 24 which is arranged for vertical sliding movement in the die block 16, pins 26 in the die block cooperating with slots 28- in the tube carrier to guide thelatter and to prevent it tromdropping out of the die block by limiting the downward movement of the tube carrier in the block.

The tubes 22 have approximately spherical lower ends, as illustrated at 30, which are seated in hemispherical hearings in the tube carrier 24. A retaining plate 32is employed to lreep the tubes in their bearings, the holes 3% in the retaining plate, through which the tubes pass, being sufiiciently. large to permit the nozzle ends ofthe tubes to move laterally in every, directiom It. willbe observed that the illust-rated'machine is arranged to drive the nails upwardly. In this type ofmachine the nail drivers remain in the guiding passages in the nailing die, their positions, when retracted, being shown in Fig. i. Advantage of this fact is taken by. utilizing the resiliency oi the drivers to maintain the tubes. 22 in predetermined,

upright positions at all times except during the actual nail driving operation, the drivers acting as yielding means tending to maintain the tubes in said predetermined positions. The nail drivers are mounted in the usual driver plate 36, which is adj-ustably' supported in the cross head: 12. The: lower ends of thev openings through the tubes 22 are flared, as shown at 33, and the stems of the drivers are reduced in size to facilitate. the swinging ofthe tubes 22 through a considerable angle. A compression spring 38, surrounding a rod 40 screwed into the cross head 12, bears.against theiunder. side of the tube holder 24, tending to elevate the latter to a position determined by its engagement with an enlarged head 42 integral with the red but permitting the driver plate 36 to approach the nailing die when the cross. head 12 rises.

A transversely sliding form holder 44, the construction and operation of which is dis closed in Patent No. 1,365,802, granted January 1S, 1921, upon the application of John F. Standish, is mounted upon the die carrier 10. Interchangeable heel form 46, of sizes and, shapes to fit the heels to be attached, are pro.- vided. Secured to the under side of each heel form 46, by screws-48, are two plates 50, 52 in which is mounted a series-of locators 54.. Each locator 54 has a flange 56which' liesin a recess between the plates and 5,2" and fits loosely enough to permit the locator. to slide about easily in, any direction in a horizontal plane within limits determined by therelative sizes of the locatorand the openings through the plates 50 and 52. The locators 54, are arranged in a pattern which, is approxi. mately the nailing patternof the heel tobe attached. Each locator hasatapered upper. end 58 which projects intothe cavity de-' fined by the heel 01 11146 and a. relatively large, flared opening 60 in its lower end, the walls of which serve to engage and guide into nailing position the nozzle end of one of. the tubes In the drawings a rubber heel62 is shown in the form 46, and the tapered-ends 58 of the locators 54 are formed. to engage and co-operate with the depressions which are usually provided in the tread face ofa rubber heel the places where the attach ing nails are to be driven.

The nail transterrer or loader (i lisanountved to swing, about a vertical axis66, frolna nail receiving position at one side ofthe nail: ing die to a nail loading or delivering posi-- tion. in register withthe die, as fully described in the Standish patent above mentioned. A loader block- 68 rests upon a vertically movable guide block 70 carried by the transierrer, accurate register. betwe-en the loader block and the guide block being maintainedby dowel pins ll. Vertical movement of the guide block and loader block inthe transferrer is effected byacranl; 72, the shaft the loader and guide blocks. The said loader and guide blocks are provided with alined nail passages 78 and 80 respectively and a sliding shutter or gate 82 operates to support the nails in the passages 78 until the gate is moved to a position Where openings 84 through it register with the said passages, when the nails are permitted to drop out through the passages 80. A pin 86 in the crank 72 slides the shutter or gate simultaneously with the lowering of the loader and guide blocks.

The lower ends of the passages 80 are flared, as shown at 88, to fit the nozzle ends of the tubes 22 when the loader has been moved over the nailing die and the handle 76 depressed. By this engagement the nozzle ends of the tubes are engaged and located in predetermined nail receiving positions and accurate delivery of the nails from the loader block to the tubes is insured.

In operation the loader block 68 is loaded with nails, either by hand or by automatic nail supplying mechanism, and is swung by the handle 76 into a position above the nail ing die, as shown in Figs. 1, 2 and 3. As the transferrer approaches nail loading position it pushes aside the sliding form holder 44, as described in the above mentioned Standish patent. When the transferrer is over the nailing die the lever 76 is depressed, lowering the loader and guide blocks until the flared openings 88 engage and locate the nozzle ends of the tubes 22 and moving the gate 82 to permit the nails in the loader block to drop into the tubes. The lever 76 is then raised, elevating the loader and guide blocks and restoring the gate to nail retaining position, whereupon the transferrer is moved away from over the nailing die and the form holder 44 automatically slides into place over the die. When the rubber heel 62 is inserted in the form 46 the nailing cavities in its tread face engage the locators 54, which are free to move sufficiently to adjust themselves exactly into alinement with the nail holes in the heel. The parts are now in the position illustrated in Fig. 4. A shoe is now jacked and pressed down upon the heel, after which the machine is started. The driver head 12 rises, compressing the spring 38, and causing the tube carrier 24 to rise. The nozzle ends of the tubes 22 are guided to their nail driving positions by the flared openings 60 in the locators, finally reaching the positions shown in Fig. 5. By the combined operation of the nail and driver guiding tubes 22 and the locators the nails are guided with accuracy so they will pass throughthe holes in the washers in the rubber heel. The drivers 14 are sufficiently flexible to permit them to conform to the uenected tubes and are sufiicient-ly resilient to restore the tubes to upright position when the drivers have been retracted and the tubes withdrawn from the locators.

Having described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a nailing machine, the combination of a plurality of nail guiding tubes supported to permit transverse movement of their nozzle ends, means tending yieldingly to maintain the tubes in predetermined positions, and a work engaging pattern member arranged to engage said nozzle ends to control the pattern of the nailing.

2. In a nailing die, the combination of a plurality of nail guiding tubes supported to permit transverse movement of their nozzle ends, and a pattern member comprising a plurality of movable, work positioned locators arranged to engage said nozzle ends to control the pattern of the nailing.

3. In a nailing die, the combination of a plurality of nail guiding tubes supported to permit transverse movement of their nozzle ends, and a pattern member comprising a plurality of locators mounted for a limited amount of floating movement and arranged to co-operate with the tubes to locate them in their respective nail driving positions.

4. In a nailing machine, the combination of a series of laterally movable nail and driver guiding tubes, a corresponding series of relatively movable locators arranged in approximately the nailing pattern of a heel, and means for advancing the tubes into positive engagement with the locaters to locate the nozzles ends of the tubes definitely in said nailing pattern.

5. In a nailing machine, the combination of a series of floating locators formed and arranged to be engaged and positioned by definite parts of a heel, and a series of nail and driver guides mounted independently of the locators and movable into any of a variety of differentrelative positions determined by the positions of the locators.

6. In a nailing machine, the combination of a floating locator having at one side a projection adapted to co-operate with a depression in the tread face of a heel to position the locator and at the opposite side a funnel-like depression, and a movable nail and driver guide having a nozzle end constructed and arranged to enter said funnel-like depression and be positioned thereby.

7. In a nailing machine, the combination of a series of laterally movable nail and driver guiding tubes, and a corresponding series of independent work positioned locators constructed and arranged to co-operate with said tubes to locate them in their respective nail driving positions.

8. In a nailing machine, the combination of a laterally movable nail and driver guiding tube, and a separate Work positioned 10- cater constructed and arranged to co per-ate with said tube to locate it in nail driving position.

93 In: a nailing machine, the combination o'f'a laterally movable nail and driver guiding tube and yielding means Within the tube tending to return said tube to a prcdetermined position.

10. In a nailing machine, the combination of a nail and driver guiding tube supported to permit swinging movement, and yielding means tending to return said tube to an upright position.

11. In a nailing machine, the combination ofa nail'and driverguiding tube supportcdto permit swinging movement, and a resilient nail driver arranged to reciprocate in the tube the resiliency of the driver tending to maintain the tube in axial alinement With the driver.

12. In a nailing machine, the combination of a nail and'driver guiding'tube supported to permit transverse movement from a nail receiving position to a" nail driving position, a resilient nail driver. arranged to reciprocate in the tube and tending to maintain the tube in nailmeceiving position, and a locator co-operating with the tube to move its nozzle end to nail driving position against the tension of the resilient driver.

13. In a nailing'machine, the combination of a laterally movable nail and driver guidingtube, yieldingmeans tendingto maintain said tube in a predetermined position. and means for locating the tube positively in said predetermined position.

14-. In a nailing machine, the combination of a series of laterally movable nail and driver guiding tubes, and a nail loading-device constructed and arranged toco-operate With said tubesto locate them in predetermined nail receiving positions.

15. In as nailing machine, the combination of a series of laterally movable nail and driver guiding tubes, and a nail-transferring device movable toward and from said tubes, the transferring device being provided with openings constructed and arranged to embrace and position the nozzle ends ofthe tubes when the transferring device is moved toward the tubes.

16. In a nailingmaohine, the combination of a series of upright, laterallymovablc, nail and driver guiding tubes, and a nail transferrer movable vertically towardand from the nozzle ends of the tubes,said nailtransterror being constructed and arranged to locate the nozzle ends of the tubes exactly in nail receiving? positions when the trans terror is depressed into engagement with the tubes.

17. In a nailing machine. the combination of a series ot laterally movable nail and driver guiding tubes, means tending yields ingly to locate the tubes in predetermined nail receiving positions, and a nail loading device constructed and arranged to co-operate with said tubesto locate thenr positivelyin said predetermined positions.

18. In a nailing machine, theeoml'aii'i'atien of a series of relatively movable nail and driver guides, means for locating said guides of a series of laterally movable nail and;

driver guides, a pattern member and a nail loading device alternatively movable i'nto co operative relation to said guides, said member having means forl'o'c'ating the guides in a nailing pattern and said device having means for locating the guides-in a different, loading pattern, means for moving the guides into engagement With the pattern member, and means for moving the loading device'into engagement with the guides.

21. The combination With a nail-transferring member, of a handle movable" upon the member and by Which said member may be moved betweennail-receiving and nail-delivering positions, and means arranged to govern the delivery ot n'a'ils from the memher, said} n'ieansbeing under the control of the handle inits movement upon the member.

22. The combination with anail-transf'erring member, of a handle revoluble upon the transferring member and arrangedto be grasped by the operator, anda movable gate governing the delivery of nailsfrom the member, the handle in its revolution acting.

upontliegate to permit the delivery of nails,-

23.Iioading mechanism comprising. an oscillatory loader-arm, a loader-block car'- ried'by thearm, a gate for governing the de' livery from the block, a handle pivoted upon the arm, and controlling connections'betivee'n the. handle and the gate.

24. In a heel-attachingmachine, the com bination with nailing mechanisn'r including a die-block provided with nail-receiving. openings, loading. mechanism including a block having nail-holding openings and being movable for delivery to the die-block'- openings, a handle movable upon the loading mechanism and arranged to be grasped byan' operator, and a movable gate co o'perating with the loader block openings, the handle being arranged in its movement to control the gate.

25. In a heel-attaching machine, the combination With nailing mechanism including a die-block provided with nail-receiving openings, loading mechanism including a block having nail-holding openings and being movable for delivery to the die-blockopenings, a handle movable upon the loading mechanism and arranged to be grasped by an operator, a movable gate cooperating With the loader-block-openings, and means arranged to move, the gate and free the nails for delivery to the die-block upon manipulation of the handle by the operator.

26. In a heel-attaching machine, the combination With nailing mechanism including a die-block provided With nail-receiving openings, loading mechanism including a block having nail-holding openings and being movable for delivery to the die-block openings, a handle arranged to move the loading mechanism, a gate arranged to open and close the loader-block-openings, and connections between the handle and gate for governing the movement of said gate.

In testimony whereof I have signed my name to this specification.

ELMER R. POPE. 

